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The term Recipient organism refers to an organism (either already modified or non-modified) that was subjected to genetic modification, whereas Parental organisms refers to those that were involved in cross breeding or cell fusion.

Production of medical or pharmaceutical compounds (human or animal) - Vaccines

Notes regarding the genetic elements introduced or modified in this LMO

A 2.9 kb region of the HVT genome was inserted into the pUC18
vector. This fragment contained the incomplete open reading frame
(ORF) of UL44 and the complete ORFs of UL45 and UL46 from the HVT
genome.

The chicken beta-actin promoter and transcription termination
sequences from SV40 and UL46 were inserted into the HVT genoming
DNA fragment.

The VP2 gene from the Delaware Variant of the IBDV was amplified
from viral RNA using RT-PCR and inserted in to the pUC18 vector in
between the beta-actin promoter and termination sequences from SV40
and UL46.

This construct and the the parental HVT strain were co-transformed
into chicken embryo fibroblasts and incubated under conditions that
favour homologous recombination.

Viral particles were cultivated from the chicken embryo fibroblasts
and plaques were expanded and screened and selected for the
expression of the VP2 gene.